Skip to content

Cups to fluid ounces (cup to fl oz)

1 cup = 8 fl oz. Enter any value below to convert cups to fluid ounces instantly, or use the volume converter for every other unit.

Maintained by Jairo TunisseLast updated Editorial policy

1 cup = 8 fl oz

fl oz = cup × 8
1 fl oz = 0.125 cup

Convert volume

Common volume conversions

1 tsp4.928921594 mL
1 tbsp14.78676478 mL
1 fl oz29.57352956 mL
1 cup236.5882365 mL
1 pt0.473176473 L
1 qt0.946352946 L
1 gal3.785411784 L
1 imp gal4.54609 L

Cups to fluid ounces conversion table

Cups to fluid ounces
Cups, US (cup)Fluid ounces, US (fl oz)
0.25 cup2 fl oz
0.5 cup4 fl oz
0.75 cup6 fl oz
1 cup8 fl oz
1.5 cup12 fl oz
2 cup16 fl oz
3 cup24 fl oz
4 cup32 fl oz

The formula

fl oz = cup × 8

1 US cup = 8 US fl oz = 236.5882365 mL. 1 US fl oz = 1/128 US gal = 29.5735295625 mL. These are exact definitions, so the only rounding is in the displayed result (10 significant digits).

When you need it

US cups to fluid ounces is used for drinks, smoothies and liquid recipe ingredients. One US cup is exactly 8 US fluid ounces, so the conversion is a simple multiply by 8.

More volume converter conversions

Frequently asked questions

How do I convert cups to fluid ounces?

Multiply the value in cups by 8 (or divide by 0.125). For example, 1 cup = 8 fl oz.

How many fluid ounces are in one cup?

1 cup = 8 fl oz.

How many fl oz are in a pint and a quart?

A US pint is 16 fl oz (2 cups) and a US quart is 32 fl oz (4 cups).

Is a cup of a dry ingredient 8 ounces?

8 fluid ounces of volume, yes — but its weight in ounces depends on the ingredient.

Related calculators